How one branch of a German noble family married into every European royal family and acquired spectacular works of art

The collection of Everett Fahy, who led the museum’s European paintings department and later the Frick Collection, headlines Christie's Old Master sale

Annual list of leading collectors boasts usual array of property developers, computer software designers and bankers

Sotheby’s auction is expected to raise £600,000 towards restoration of Durham Wharf by architecture collective Assemble

Former director of Pompidou among names behind online platform, which sells works for under $10,000<br> <br>

Lakshmi Mittal and Roman Abramovich have slipped down the Sunday Times ranking

The Drawing Center displays a selection of the 4,000 works amassed by the ‘natural-born collector’

The artist’s patron, the renewable energy investor Jane Woodward, has wholly backed the project

The museum will reinstall its fourth floor galleries with international works from the “boundary-crossing” decade

Editors and contributors share $25,000 biennial award, this year backed by the Broad Foundation

Summit in Sheffield asks how arts organisations can attract private patronage

But Venice exhibition is also full of political unrest and upheaval

Superstar artist provides exclusive insight into vast and eclectic collection before his Yokohama show—just don’t call him the Japanese Andy Warhol

Among who's who of leading collectors, many have established foundations

Property tycoon Aby Rosen, promoting his new Manhattan skyscraper, talks about art-world fatigue and giving something back to society

His outstanding collection secured his legacy, says Joachim Whaley

International collectors plan to share exhibitions and co-commission works of art

Daata Editions commissions original sound, video and online works of art

National heritage office says the Prado should hand over four paintings for new Royal Collections museum

Unknown works appear with more familiar ones but a few key pieces have lost impact they once had in Breuer Building

But buyers are not risking large sums, with the majority of works still priced below £10,000

A year of research reveals how nobles used theatrical interiors to show their collections

In 2014 we noted that market speculation can offer rich rewards, but in the long term, it may do collectors more harm than good